package com.icss.th.subjects.facade;

import java.util.List;

import com.icss.th.subjects.pojo.Subject;

public interface ISubjectsFacade 
{
	/**
	 * 获得本类别的下一级类别
	 * @param subject
	 * @param conn
	 * @return
	 * @throws SQLException 
	 */
	List<Subject> getChildren(Subject subject);
	
	/**
	 * get top {topNum} popular subject
	 * @param topNum
	 * @return
	 */
	List<Subject> getPopular(int topNum);
 }
